content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable;
  
  import static org.junit.Assert.assertTrue;
  
  import org.junit.Test;
  
  import io.reactivex.common.*;
  import io.reactivex.common.exceptions.TestException;
  import io.reactivex.common.functions.Cancellable;
  
  public class MaybeCreateTest {
      @Test(expected = NullPointerException.class)
      public void nullArgument() {
          Maybe.create(null);
      }
  
      @Test
      public void basic() {
          final Disposable d = Disposables.empty();
  
          Maybe.<Integer>create(new MaybeOnSubscribe<Integer>() {
              @Override
              public void subscribe(MaybeEmitter<Integer> e) throws Exception {
                  e.setDisposable(d);
  
                  e.onSuccess(1);
                  e.onError(new TestException());
                  e.onSuccess(2);
                  e.onError(new TestException());
              }
          }).test().assertResult(1);
  
          assertTrue(d.isDisposed());
      }
  
      @Test
      public void basicWithCancellable() {
          final Disposable d1 = Disposables.empty();
          final Disposable d2 = Disposables.empty();
  
          Maybe.<Integer>create(new MaybeOnSubscribe<Integer>() {
              @Override
              public void subscribe(MaybeEmitter<Integer> e) throws Exception {
                  e.setDisposable(d1);
                  e.setCancellable(new Cancellable() {
                      @Override
                      public void cancel() throws Exception {
                          d2.dispose();
                      }
                  });
  
                  e.onSuccess(1);
                  e.onError(new TestException());
                  e.onSuccess(2);
                  e.onError(new TestException());
              }
          }).test().assertResult(1);
  
          assertTrue(d1.isDisposed());
          assertTrue(d2.isDisposed());
      }
  
      @Test
      public void basicWithError() {
          final Disposable d = Disposables.empty();
  
          Maybe.<Integer>create(new MaybeOnSubscribe<Integer>() {
              @Override
              public void subscribe(MaybeEmitter<Integer> e) throws Exception {
                  e.setDisposable(d);
  
                  e.onError(new TestException());
                  e.onSuccess(2);
                  e.onError(new TestException());
              }
          }).test().assertFailure(TestException.class);
  
          assertTrue(d.isDisposed());
      }
  
  
      @Test
      public void basicWithCompletion() {
          final Disposable d = Disposables.empty();
  
          Maybe.<Integer>create(new MaybeOnSubscribe<Integer>() {
              @Override
              public void subscribe(MaybeEmitter<Integer> e) throws Exception {
                  e.setDisposable(d);
  
                  e.onComplete();
                  e.onSuccess(2);
                  e.onError(new TestException());
              }
          }).test().assertComplete();
  
          assertTrue(d.isDisposed());
      }
  
      @Test(expected = IllegalArgumentException.class)
      public void unsafeCreate() {
          Maybe.unsafeCreate(Maybe.just(1));
      }
  }
  